JPH0335894A - Method for joining aluminum or aluminum alloy - Google Patents
Method for joining aluminum or aluminum alloyInfo
- Publication number
- JPH0335894A JPH0335894A JP17116289A JP17116289A JPH0335894A JP H0335894 A JPH0335894 A JP H0335894A JP 17116289 A JP17116289 A JP 17116289A JP 17116289 A JP17116289 A JP 17116289A JP H0335894 A JPH0335894 A JP H0335894A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- aluminum
- alloy
- aluminum alloy
- flux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 29
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 15
- 238000005219 brazing Methods 0.000 claims abstract description 49
- 238000002844 melting Methods 0.000 claims abstract description 21
- 230000008018 melting Effects 0.000 claims abstract description 21
- 230000004907 flux Effects 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 abstract description 9
- 239000000956 alloy Substances 0.000 abstract description 9
- 239000004925 Acrylic resin Substances 0.000 abstract description 6
- 229920000178 Acrylic resin Polymers 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 238000003763 carbonization Methods 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 229910007570 Zn-Al Inorganic materials 0.000 abstract 1
- 239000010953 base metal Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 241000190020 Zelkova serrata Species 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- -1 ethylene hydrocarbons Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nonmetallic Welding Materials (AREA)
- Ceramic Products (AREA)
Abstract
Description
本発明は、アルミニウム又はアルミニウム合金の接合方
法に関するものである。The present invention relates to a method for joining aluminum or an aluminum alloy.
アルミニウム又はアルミニウム合金（以下、単にアルミ
ニウム合金）製の部材をろう付けするに際し、このアル
ミニウム合金部材が単純な形状で、かつ、接き個所が少
ない場合には、ｌ〜２帥φの＾ｌ−５ｉ系合金のろう線
材とフラックスを用いて６００℃程度に加熱するトーチ
ろう付けが用いられる。
しかしながら、アルミニウム合金の融点は約６６０℃程
度と低い為、過熱によって接合部材の熔融が引き起こさ
れる致命的な欠点がある。
この為、ろう付け温度が低くても可能なろう材の使用が
望まれており、Ｚｎ−＾１等のＺｎ系の合金を用いるこ
とが提案されている。
しかしながら、Ｚｎ−＾１系合金は加工性が著しく悪く
、トーチろう付けに使用する為のｌ〜２１φの線材にす
る加工は極めて困難である。
又、ろう線材を供給した後フラックスを塗布するのも面
倒で、作業性が低い。When brazing members made of aluminum or aluminum alloy (hereinafter simply referred to as aluminum alloy), if the aluminum alloy member has a simple shape and there are few joints, it is necessary to braze the parts made of aluminum or aluminum alloy (hereinafter simply referred to as aluminum alloy). Torch brazing is used in which a 5i alloy brazing wire and flux are heated to about 600°C. However, since the melting point of aluminum alloy is as low as about 660° C., there is a fatal drawback that overheating causes melting of the joining members. For this reason, it is desired to use a brazing material that can be used even at a low brazing temperature, and it has been proposed to use a Zn-based alloy such as Zn-^1. However, Zn-^1 alloy has extremely poor workability, and it is extremely difficult to process it into wire rods of 1 to 21φ for use in torch brazing. Further, it is troublesome to apply flux after supplying the brazing wire, and the workability is low.
本発明の第１の目的は、接合しようとするアルミニウム
合金の熔融問題を解決するアルミニウム合金の接合方法
を提供することである。
本発明の第２の目的は、線材への加工が極めて困難な例
えばＺｎ−＾１系合金を用いてのアルミニウム合金の接
合が容易な方法を提供することである。
上記本発明の目的は、融点が約３４０〜５５０℃のアル
ミニウム台余ろう付け用金属粉末及びろう付け温度で分
解炭化するより揮発性が高いバインダを含む組成物を、
アルミニウム合金の接合部に介在させると共にフラック
スも介在させ、その後加熱することを特徴とするアルミ
ニウム合金の接合方法によって達成される。
又、融点が約３４０〜５５０℃のアルミニウム合金ろう
付け用金属粉末及びろう付け温度で分解炭化するより揮
発性が高いバインダ、さらにフラックスを含む組成物を
、アルミニウム合金の接合部に介在させ、その後加熱す
ることを特徴とするアルミニウム合金の接合方法によっ
ても達成される。
ここで融点が約３４０〜５５０℃のろう付け用金属粉末
としては、Ｚｎ又はＺｎを主成分とするＺｎ−＾１系の
合金がある。
尚、ここでろう材となる金属粉末の融点が３４０℃未満
の低すぎる場合には接合強度に問題が起きる場合があり
、そして５５０℃を越えて高くなるとろう付け作業時に
アルミニウム合金の母材が熔融する恐れがあるからであ
り、このような観点からろう付け用金属粉末の融点は約
３４０〜５５０°Ｃであることが必要である。
バインダとしてはろう付け加熱によって分解炭化するよ
り揮発してしまう有機樹脂であればよく。
このような樹脂としては分子量が約１０００〜１０００
００のアクリル系樹脂がある。尚、このようなアクリル
系の樹脂の他にも分子量的ｌＯＯ〜１００００のエチレ
ン系炭化水素等のような樹脂を適宜選択使用できる。
そして、ろう付け用金属粉末とバインダとの混合割合は
、この混合分散液の粘度が約１０〜５０００ｃｐ３とな
るように配合しておけば良い、すなわち、これらの成分
の配合割合は、塗布時にろう付け組成物−がすぐには垂
れ落ちない程度にしておけば良いものである。但し、バ
インダの相対量が多くなることはろう付け用金属粉末が
少ないことであり、ろう付け用金属粉末が少なすぎると
ろう付けがうまくいかなくなるから、ろう付け用金属粉
末／バインダは約２以上であることが望ましい。
そして、これらろう付け用金属粉末及び分解炭化するよ
り揮発性が高いバインダ、さらには必要に応じてろう材
の融点近傍の融点を有するフラックスを水あるいは有機
溶剤中で混合分散させれば良く、この混合分散液をろう
付けしようとする個所に付着させて所定のろう付けを実
施すればよい。
尚、フラックス成分を上記混合分散液中に混合分散させ
ておけば、その後のフラックス塗布工程を減らすことが
でき、しかもろう付けに必要な量だけ添加することがで
きる為コスト的に有利である６
そして、フラックスとしてはＣ５Ｆ−＾ｌＦｉのような
フッ化物系のもの、ＺｎＣＩｔ−ＮａＦ−ＮＨ２Ｃｌ、
ＫＣＩ−ＬｉｃｋＮａＦ ＣａＣ１ｚ−ＫＣＩ−Ｚｎ
Ｃ１＊のような塩化物系のものがあり１、その他にも各
種のフラックスを使用して良い
ろう付け用金属粉末や揮発性が高いバインダを含む組成
物を接合部に供給する方法としては、チューブからの押
し出し、ポンプによる供給、ローラ塗布法、刷毛塗り法
、スプレー法等が考えられ、如何なる手段が採用されて
も良い。A first object of the present invention is to provide a method for joining aluminum alloys that solves the problem of melting of the aluminum alloys to be joined. A second object of the present invention is to provide a method for easily joining aluminum alloys, such as Zn-^1 alloys, which are extremely difficult to process into wire rods. The object of the present invention is to provide a composition comprising a metal powder for brazing an aluminum base having a melting point of about 340 to 550°C and a binder with higher volatility that decomposes and carbonizes at the brazing temperature.
This is achieved by a method for joining aluminum alloys, which is characterized by interposing a flux at the joint portion of the aluminum alloy and also interposing a flux, followed by heating. In addition, a composition containing a metal powder for aluminum alloy brazing having a melting point of about 340 to 550°C, a binder with higher volatility that decomposes and carbonizes at the brazing temperature, and a flux is interposed in the joint of the aluminum alloy, and then This can also be achieved by a method for joining aluminum alloys that involves heating. Here, as the metal powder for brazing having a melting point of about 340 to 550°C, there is Zn or a Zn-^1 alloy containing Zn as a main component. Note that if the melting point of the metal powder used as the brazing material is too low (less than 340°C), problems may occur in the bonding strength, and if the melting point exceeds 550°C, the aluminum alloy base material may break during the brazing process. This is because there is a risk of melting, and from this point of view, it is necessary that the melting point of the metal powder for brazing is about 340 to 550°C. The binder may be any organic resin that evaporates rather than decomposes and carbonizes during brazing heating. Such resins have a molecular weight of about 1000 to 1000.
There are 00 acrylic resins. In addition to such acrylic resins, resins such as ethylene hydrocarbons having a molecular weight of 100 to 10,000 can be appropriately selected and used. The mixing ratio of the metal powder for brazing and the binder should be such that the viscosity of this mixed dispersion is about 10 to 5000 cp3. It is sufficient to keep the coating composition at a level that does not drip off immediately. However, an increase in the relative amount of binder means less metal powder for brazing, and too little metal powder for brazing will cause failure of brazing, so the ratio of metal powder for brazing/binder should be approximately 2 or more. It is desirable that Then, these metal powders for brazing, a binder that is more volatile than decomposition and carbonization, and, if necessary, a flux having a melting point near the melting point of the brazing material may be mixed and dispersed in water or an organic solvent. What is necessary is just to apply a mixed dispersion liquid to the part to be brazed and perform predetermined brazing. Furthermore, if the flux component is mixed and dispersed in the above-mentioned mixed dispersion liquid, the subsequent flux application process can be reduced, and it is possible to add only the amount necessary for brazing, which is advantageous in terms of cost. As for the flux, fluoride-based ones such as C5F-^lFi, ZnCIt-NaF-NH2Cl,
KCI-LickNaF CaC1z-KCI-Zn
There are chloride-based fluxes such as C1*1, and other methods of supplying compositions containing brazing metal powder and highly volatile binders to joints using various types of fluxes include: Possible methods include extrusion from a tube, supply using a pump, roller coating, brush coating, and spraying, and any method may be used.
【実施例１】
平均粒径約７０μ鋤で融点が５００’Ｃの＾ｌ−７０ｗ
ｔ％Ｚｎ合金粉末と５％アクリル系樹脂水溶液とを２：
１の割合（重量比）で混合分散してろう付け用組成物を
得た。
このろう付け用組成物を、Ａ ３００３合金を押出加工
で作製した押出管ｌとＡ ３００３合金を押出加工で作
製した欅２との第１５！ｉに示す如くの組立物の接合部
に定量ポンプで１ｇ供給付着させ、その後塩化物系のフ
ラックス水溶液を塗布し、トーチろう付けを行った。[Example 1] ^l-70w with an average particle size of about 70μ and a melting point of 500'C
t% Zn alloy powder and 5% acrylic resin aqueous solution in 2:
A brazing composition was obtained by mixing and dispersing at a ratio (weight ratio) of 1:1. This brazing composition was applied to extruded pipe 1 made by extrusion of A 3003 alloy and keyaki 2 made by extrusion of A 3003 alloy. 1 g was applied using a metering pump to the joints of the assembly shown in i, and then an aqueous chloride flux solution was applied and torch brazing was performed.
【実施例２】
実施例１における融点が５００℃の＾ｌ−７０ｗｔ％Ｚ
ｎ合金粉末と５％アクリル系樹脂水溶液との混合分散ろ
う付け用組成物の代わりに、融点が５００℃の＾１７０
ｗＬ％Ｚｎ合金粉末と５％アクリル系樹脂水溶液とフッ
化物系フラックスとの混合分散ろう付け用組成物（重量
比で６０：３０： １ ）を用いて実施例１と同様にろ
う付けを行った。
但し、ろう付け用組成物を接合部に供給後に行った塩化
物系フラックスの塗布は省略した。[Example 2] ^l-70wt%Z with a melting point of 500°C in Example 1
Instead of the mixed and dispersed brazing composition of n-alloy powder and 5% acrylic resin aqueous solution, ^170 with a melting point of 500°C
Brazing was performed in the same manner as in Example 1 using a mixed and dispersed brazing composition (60:30:1 by weight) of wL% Zn alloy powder, 5% acrylic resin aqueous solution, and fluoride flux. . However, the application of chloride flux, which was performed after supplying the brazing composition to the joint, was omitted.
【比較例１】
実施例１におけるろう付け用組成物の代わりに、融点５
８０℃の＾Ｉ １２ｗｔ％Ｓｉ合金ろう線材を用い、
そして塩化物系フラックスを塗布してトーチろう付けを
行った。[Comparative Example 1] Instead of the brazing composition in Example 1, melting point 5
Using a 12wt% Si alloy brazing wire at 80℃,
Then, chloride-based flux was applied and torch brazing was performed.
上記各例におけるろう付け性、接合部の熔融具合及びＣ
ＡＳＳ試験７２０時間による耐孔食性を調べたので、そ
の結果を表１に示す。
表１
これより、本発明によればアルミニウム合金の熔融が問
題とならず、しがもろう付け性が良好であり、かつ、接
合に問題がなく、さらには耐孔食性にも優れていること
が判る。さらには、線材への加工を必要としないがら、
低コストで実施できる。Brazing properties, melting conditions of joints, and C in each of the above examples
The pitting corrosion resistance was investigated by an ASS test for 720 hours, and the results are shown in Table 1. Table 1 From this, it can be seen that according to the present invention, melting of the aluminum alloy is not a problem, the brazing property is good, there is no problem in joining, and furthermore, the pitting corrosion resistance is excellent. I understand. Furthermore, while not requiring processing into wire rods,
It can be implemented at low cost.
第１図は、押出管と棒との組立図である。 ｌ・・・押出管、２・・・欅２゜ FIG. 1 is an assembled view of the extruded tube and rod. l...Extruded pipe, 2... Keyaki 2゜
Claims (2)
ルミニウム合金ろう付け用金属粉末及びろう付け温度で
分解炭化するより揮発性が高いバインダを含む組成物を
、アルミニウム又はアルミニウム合金の接合部に介在さ
せると共にフラックスも介在させ、その後加熱すること
を特徴とするアルミニウム又はアルミニウム合金の接合
方法。(1) A composition containing a metal powder for brazing aluminum or aluminum alloy with a melting point of about 340 to 550°C and a binder with higher volatility that decomposes and carbonizes at the brazing temperature is interposed in the joint of aluminum or aluminum alloy. A method for joining aluminum or an aluminum alloy, characterized by interposing flux at the same time and then heating.
ルミニウム合金ろう付け用金属粉末及びろう付け温度で
分解炭化するより揮発性が高いバインダ、さらにフラッ
クスを含む組成物を、アルミニウム又はアルミニウム合
金の接合部に介在させ、その後加熱することを特徴とす
るアルミニウム又はアルミニウム合金の接合方法。(2) A composition containing an aluminum or aluminum alloy brazing metal powder with a melting point of about 340 to 550°C, a binder with higher volatility that decomposes and carbonizes at the brazing temperature, and a flux is applied to the joint of aluminum or aluminum alloy. 1. A method for joining aluminum or an aluminum alloy, which comprises interposing the aluminum or aluminum alloy with the aluminum and then heating the aluminum or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171162A JP2681390B2 (en) | 1989-07-04 | 1989-07-04 | Method of joining aluminum or aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1171162A JP2681390B2 (en) | 1989-07-04 | 1989-07-04 | Method of joining aluminum or aluminum alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0335894A true JPH0335894A (en) | 1991-02-15 |
| JP2681390B2 JP2681390B2 (en) | 1997-11-26 |
Family
ID=15918143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1171162A Expired - Fee Related JP2681390B2 (en) | 1989-07-04 | 1989-07-04 | Method of joining aluminum or aluminum alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2681390B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2387347A (en) * | 2002-04-09 | 2003-10-15 | Ford Motor Co | Tin and Zinc-based solder fillers for aluminium body parts and methods of applying the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597763A (en) * | 1982-07-05 | 1984-01-14 | Suzuki Motor Co Ltd | Fuel heating & feeding unit in internal combustion engine |
| JPH0299296A (en) * | 1988-08-18 | 1990-04-11 | Fusion Inc | Flux for aluminum material brazing and brazing method |
-
1989
- 1989-07-04 JP JP1171162A patent/JP2681390B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597763A (en) * | 1982-07-05 | 1984-01-14 | Suzuki Motor Co Ltd | Fuel heating & feeding unit in internal combustion engine |
| JPH0299296A (en) * | 1988-08-18 | 1990-04-11 | Fusion Inc | Flux for aluminum material brazing and brazing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2387347A (en) * | 2002-04-09 | 2003-10-15 | Ford Motor Co | Tin and Zinc-based solder fillers for aluminium body parts and methods of applying the same |
| US6840434B2 (en) | 2002-04-09 | 2005-01-11 | Ford Motor Company | Tin-and zinc-based solder fillers for aluminum body parts and methods of applying the same |
| GB2387347B (en) * | 2002-04-09 | 2005-09-14 | Ford Motor Co | Tin-based solder fillers for aluminium body parts and methods of applying the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2681390B2 (en) | 1997-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |